Request Details

Route
/api_complex GET
Timestamp
Sep 12, 2026 3:31 AM
Duration
241.22 ms
Status
204
Response Size
90 KB
Error
No

Performance Breakdown

Database
19.7% (11 queries)
View Rendering
5.8%
Application Logic
74.5%
Other Operations
0.0%
Total Operations
19
Slowest Operation
241.22 ms

Request Trace

How to read this

Each row is a layer of your stack. Many short Database bars means N+1 queries — fix with includes(). A wide Action bar with little Database time means slow Ruby code. A wide View bar usually means a partial rendered in a loop.

Action
View
Database
Other
Action
View
Database
0.0ms 323.7ms 647.4ms 971.2ms 1294.9ms

Operations

How to use this

Sort by Impact to find your biggest wins. Click any row for details and optimisation suggestions. The same SQL appearing multiple times is an N+1 — fix with includes(). A single operation above 50% impact is your highest priority.

Operation Duration Impact Timeline Actions
home#api_complex 241 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 35 ms 14.5%
users/index 14 ms 5.8%
users/index 5 ms 2.1%
SELECT name FROM users 28 ms 11.6%
SELECT * FROM posts WHERE created_at > ? 32 ms 13.3%
SELECT * FROM users WHERE id = ? 13 ms 5.4%
SELECT id, name FROM users WHERE email = ? 21 ms 8.7%
users/index 35 ms 14.5%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 6 ms 2.5%
SELECT * FROM (SELECT users.id, users.name, users.email, COUNT(posts.id) as post_count FROM users LEFT JOIN posts ON users.id = posts.user_id WHERE users.active = ? GROUP BY users.id) as user_posts JOIN (SELECT user_id, COUNT(*) as comment_count FROM c... 25 ms 10.4%
users/index 21 ms 8.7%
home#api_complex 241 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 30 ms 12.4%
home#api_complex 241 ms 100.0%
home#api_complex 241 ms 100.0%
SELECT name FROM users 23 ms 9.5%
SELECT * FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id LEFT JOIN tags ON posts.id = tags.post_id LEFT JOIN categories ON posts.category_id = categories.id WHERE users.active = ? AND posts.publi... 30 ms 12.4%
SELECT id, name, email FROM users WHERE id = ? 12 ms 5.0%